Coupling.



'.To all'uliom it may' concern: I

UNITED srarns PATENT OFFICE.

EMERSON G. GAYLQRD7 OF CHICOPEE, MASSACHUSETTS;

- CQUPLING,

l followinglisafnll, clear, and exact description. l i

Thisanvention relates to a coupling for annular metallic sections, such as those cornprised .between 'a hose and lts nozzle, vbetween .two lengggths'of hose, or Yfor annular sections available 1n other situations, and

.pertains in a. general way to a somewhat. .well known description of coupling wherein one of the sections is adapted to. be fitted into the other, and in which both are provided-with interengag-ing interrupted, or mutilated, helical threads.

r-This invention has for its object the atltainment of an improved coupling having structural features and consequent advan' --tiiges which are hereinafter described and i` :Figure ral central longitudinal sectional view' of the explained in conjunction with theaccompany drawings in which .a r 1 is in part a side view'and lnpart coupling sections in separated relations; `l3`ig.'2 isl al central longitudinal sectional view of the sections in coupled relations; Figs. 3 and 4 are end views of the two coupling sections; Fig. 5 is a development showing a peculiarity of construction of the cam ribs for one of the sections.

In the drawings,-A andB represent two annular coupling sections,the one A. comiprising a cylindrical neck portion a having a shoulder ange b back from `its end l0,

and provided in the face of said flange which is towards the end of the section with an annular groove df in which is sunk for the greater portion-fof its bulk a ring f .of compressiblematerial, a portion of said rin'g, which may advantageously be of rubber or the like, projecting slightly beyond the face of the shoulderfconstituted by said ange. The othersecti'on B' is constructed with a cylindrical open'ingg'of a diameter larger than they portion of` the section forward of its internal shoulder L and both the sald neck portion. a and the c viindrically -recessed portion of both sections have serles of respectively external and ,internal Interi speciacatioa of Lettersratena Applicationled May 11, 1908. Serial No. 432,029.-

v Patented Dec. l8, 1908..

" engaging cam ribs a' and j'wliiclrare notin' lcontinuous lines of hehxes or yscrew threads as heretofore constructed in couplings 'of terrupted by spaces whereby their circuml ferent] al continuityy 1s broken are as l more definitely indicated by the development" in Fig. 5 of the surface of one of the sections on which the interrupted cam ribs are provided, that is to say: The circumferential endwise separated ribs of the several series are located in common planes at right angles to the axis of `the annular part on which they are formed, the cam ribsv have, unii formly inclinations or pitch each'from its one end coincident with agiven vtransverse plane, terminating with their end locations in a common planeparallel with and slightly axially removed from the first mentioned plane from which they proceeded. J

By making theinterengaging ribs 2' and as 'cams having the distinguishingl feature last described and exemplified in the dia# grannFig. 5, it becomes immaterial as to -this general charactenv'but whicl1,being Ai117` l which spaces between the ends of ribs of the one section the ribs yof the Vother section of the coupling maybe inserted as immediately the sections have rotative movements one relatively. to the other, a small fraction of a turn will cause the end of the section D to -be forced against the shoulder provided with a 'packing ring comprised in the flange of the other section 'it being appreciated that the forcing orlcrowding actions of 'all of the cam ribs arelalike, and in this coupling it never becomes necessary to impart but the small fraction ofa rotary movement of the one section relatively to the other to set the tube parts in their firmly closed relations, whereas in coupling sections'in which the interrupted threads of true heliXes are employed unless the parts are brought to juxtaposition in certain particular relations a much greater rotative movement is re' nearly home as it is possible to do, before imparting the turning movementsthe end ribs of the series on one section have greater widths, as shown at 20. than the other ribs of the series longitudinally therebeyond, While the groove-like recesses in which such rlbs 2 are engaged are :correspondingiy wider than the spaces between the ribs'of the ngi-rrower. dimensions..

I claim 1 v -i'lwo annular, coupling sectlon's5 .on'e com# pnsm a cylindrical neck-portlonhavmg a shoul er flange back from its end andthe other eblnprismg a"'cy1indricl openng hav! ling aninternal shoulder forward ofitsl open -end, bot-h the said neokiand eylindrieally recessed portionsihaving sets of, respectively Y I externaland internal interrupted and interengaging 'cam ribs', those' of one series being adapted for becoming loosely positioned in @enemy -the ,spa'oes betweenthose of the' other. anath'eendl ribs o the series on one sectionhav.` inggreater Widths-tha'n-the 'other' ribs, and

the groove like recesses in 4the* other section .in which such widened ribs become engagedv by relative rotative movement-s, being corre.; l20 s'pondingl'y ".Wder. thn the spaces between the ribs for the purpose set forth. 

